OSError: timeout waiting for v2 card
Title: SD Card Initialization Timeout Issue: Lenovo thinkplus platinum Pro 64GB V30 A3 U3
Description:
I'm experiencing an initialization timeout issue with a Lenovo thinkplus platinum Pro 64GB V30 A3 U3 SD card on MicroPython version 1.21.0 on my device. When I attempt to initialize the SD card, I encounter the following error message:
SD card initialization timeout error: Error: Timeout occurred during SD card initialization.
Steps to reproduce:
- Insert the Lenovo thinkplus platinum Pro 64GB V30 A3 U3 SD card into the device's SD card slot.
- Execute the SD card initialization code in the MicroPython environment.
import os, sdcard, machine
def sdtest():
spi = machine.SPI(1, baudrate=1000000, sck=machine.Pin(10), mosi=machine.Pin(11), miso=machine.Pin(12))
spi.init() # Ensure right baudrate
sd = sdcard.SDCard(spi, machine.Pin(13, machine.Pin.OUT)) # Compatible with PCB
vfs = os.VfsFat(sd)
os.mount(vfs, "/fc")
print("Filesystem check")
print(os.listdir("/fc"))
line = "abcdefghijklmnopqrstuvwxyz\n"
lines = line * 200 # 5400 chars
short = "1234567890\n"
fn = "/fc/rats.txt"
print()
print("Multiple block read/write")
with open(fn, "w") as f:
n = f.write(lines)
print(n, "bytes written")
n = f.write(short)
print(n, "bytes written")
n = f.write(lines)
print(n, "bytes written")
with open(fn, "r") as f:
result1 = f.read()
print(len(result1), "bytes read")
fn = "/fc/rats1.txt"
print()
print("Single block read/write")
with open(fn, "w") as f:
n = f.write(short) # one block
print(n, "bytes written")
with open(fn, "r") as f:
result2 = f.read()
print(len(result2), "bytes read")
os.umount("/fc")
print()
print("Verifying data read back")
success = True
if result1 == "".join((lines, short, lines)):
print("Large file Pass")
else:
print("Large file Fail")
success = False
if result2 == short:
print("Small file Pass")
else:
print("Small file Fail")
success = False
print()
print("Tests", "passed" if success else "failed")
sdtest()
The SD card initialization timeout error occurs after executing the above code.
Expected behavior:
I expect the SD card to initialize successfully, allowing me to access files on the SD card.
Attempts made:
I’ve checked the physical connection and confirmed that the SD card is inserted correctly.
I attempted to upgrade MicroPython to the latest version, but the issue still persists.
The memory card is formatted with the FAT32 file system.
I have searched through MicroPython documentation and forums but have not found a similar issue.
Environment:
Device model: Lenovo thinkplus platinum Pro
SD card model: 64GB V30 A3 U3
MicroPython version: 1.21.0
Operating system: (if relevant)
Expected resolution time:
If possible, please address this issue as soon as possible as the SD card is crucial for my project.
Thank you for your kind assistance!Pico: sdcard.py timeout waiting for response
I was unable to use the https://github.com/micropython/micropython/blob/master/drivers/sdcard/sdcard.py code as-is on my Raspberry Pi Pico, I would get "timeout waiting for response" when accessing my microSD card device, I presume from this part of the code:
# read until start byte (0xff)
for i in range(_CMD_TIMEOUT):
self.spi.readinto(self.tokenbuf, 0xFF)
if self.tokenbuf[0] == _TOKEN_DATA:
break
else:
self.cs(1)
raise OSError("timeout waiting for response")
I was able to fix this by simply changing the _CMD_TIMEOUT from 100 to 1000:
_CMD_TIMEOUT = const(1000)
I don't know if the Pico board is faster, or my old SanDisk 8GB is slower than what was tested, but there is an existence proof that more cards will work with a longer timeout. Also, another Pico user with other SanDisk uSD cards reported the same problem, and found the same fix worked for them as well: https://www.raspberrypi.org/forums/viewtopic.php?f=146&t=308819&start=25
@zhuzhutou Please try the updated SDCard library in my pull request:
https://github.com/micropython/micropython-lib/pull/765
and let me know if it works with this.
This is resolved with the latest sdcard code.